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3 years ago

Which best describes the transition from gas to liquid?

Chemistry

2 answers:

Nina [5.8K]3 years ago

8 0

A - its condensation and gas particles have a higher kinetic energy

Lisa [10]3 years ago

7 0

Answer: Option (a) is the correct answer.

Explanation:

In gaseous state, molecules move rapidly from one place to another as the molecules have high energy.

So, when gaseous state changes into liquid state then molecules slow down in speed because of decrease in energy molecules come slightly closer to each other.

For example, during condensation of water, vapors change into liquid.

Thus, we can conclude that energy must be removed because particles in liquid move more slowly best describes the transition from gas to liquid.

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What part of an atom determines if it will combine or break apart from other substances?

Anni [7]

Electron is the correct answer :D

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3 years ago

If the same index fossils are found in different rock strate miles apart, what is probably true about the rock layers?

vodka [1.7K]

Answer:

they will be different

Explanation:

6 0

3 years ago

4. How many moles of atoms are present in 7 moles of sulfuric acid, H₂SO4?

Afina-wow [57]

Answer:

49 moles of atoms

Explanation:

There are 7 individual atoms in each molecule of H2SO4: (2 hydrogens + 1 sulfur + 4 oxygens).

Therefore, if 7 moles are decomposed, there would be 7 times that amount of individual atoms:

7 x 7 = 49 moles of atoms

4 0

2 years ago

How many molecules of carbon dioxide are dissolved in 0.550 L of water at 25 °C if the pressure of CO2 above the water is 0.250

Grace [21]

Answer: The number of molecules of carbon dioxide gas are $2.815\times 10^{21}$

Explanation:

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{CO_2}=K_H\times p_{CO_2}$

where,

$K_H$ = Henry's constant = $0.034mol/L.atm$

$C_{CO_2}$ = molar solubility of carbon dioxide gas

$p_{CO_2}$ = pressure of carbon dioxide gas = 0.250 atm

Putting values in above equation, we get:

$C_{CO_2}=0.034mol/L.atm\times 0.250atm\\\\C_{CO_2}=8.5\times 10^{-3}M$

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$

Molarity of carbon dioxide = $8.5\times 10^{-5}M$

Volume of solution = 0.550 L

Putting values in above equation, we get:

$8.5\times 10^{-3}M=\frac{\text{Moles of }CO_2}{0.550L}\\\\\text{Moles of }CO_2=(8.5\times 10^{-3}mol/L\times 0.550L)=4.675\times 10^{-3}mol$

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of molecules

So, $4.675\times 10^{-3}$ moles of carbon dioxide will contain = $(6.022\times 10^{23}\times 4.675\times 10^{-3})=2.815\times 10^{21}$ number of molecules

Hence, the number of molecules of carbon dioxide gas are $2.815\times 10^{21}$

3 0

3 years ago

Read 2 more answers

Forests are the only carbon sinks on Earth. Please select the best answer from the choices provided T F

dmitriy555 [2]

False, as oceans can act as carbon sinks along with forests.

4 0

3 years ago

Read 2 more answers